Robotic vacuum



FIG. 1 is a front elevation view of a robotic vacuum showing our new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a right side elevation view thereof, the left side being a mirror image;

FIG. 4 is a top plan view thereof;

FIG. 5 is an overhead front perspective view thereof; and,

FIG. 6 is an overhead rear perspective view thereof.

The broken lines in the drawings depict unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a robotic vacuum, as shown and described. 